Transmission Delay Time - Mitsubishi Electric MELSEC FX2N-64CL-M User Manual

FX2N-64CL-M CC-Link/LT Master Block
9.1.2

Transmission delay time

The transmission delay time (the time until data is received) (including the time for
communication between the main unit and FX
formula.
1) Master station ← Remote station (input)
Time until a device (X) in the main unit turns ON or OFF after a signal is input to the remote
station
Calculation formula
SM × 2 + (2 - n)
SM: Scan time of master station PLC
LS: Link scan time
n: SM/LS (whose decimals are omitted)
*1: 0 if the value "2-n" is 0 or less
Example:
The scan time of the master station PLC is 5 ms, the link scan time is 1.2 ms, and the input
response time of the remote I/O station is 1.5 ms
SM × 2 + (2 - n)
= 5 × 2 + (2 - 4) × 1.2 + 1.5 [n = 4 (5/1.2 = 4.16..., then decimals are omitted)]
= 11.5 [ms]
2) Master station → Remote station (output)
Time until an output in the remote station turns ON or OFF after a device (Y) in the main
unit is set to ON or OFF
Calculation formula
SM + LS × 2 + Remote station output response time [ms]
SM: Scan time of master station PLC
LS: Link scan time
Example:
The scan time of the master station PLC is 5 ms, the link scan time is 1.2 ms, and the output
response time of the remote I/O station is 0.5 ms
SM + LS × 2 + Remote station output response time [ms]
= 5 + 1.2 × 2 + 0.5
= 7.9 [ms]
× LS + Remote station input response time [ms]
*1
× LS + Remote station input response time [ms]
*1
Data Link Processing Time 9
-64CL-M) can be calculated by the following
2N
9-2